[1] AIIMS, Dr RP Ctr Ophthalm Sci, New Delhi, India
[2] Capstone Clin, Chennai, Tamil Nadu, India
[3] Baroda Children Eye Care & Squint Clin, Vadodara, Gujarat, India
[4] JNR Children Eye Care & Squint Clin, Mumbai, Maharashtra, India
[5] LV Prasad Eye Inst, Hyderabad, Telangana, India
[6] Post Grad Inst Med Educ & Res, Chandigarh, India
[7] Drishti Eye Clin, Nagpur, Maharashtra, India
[8] Ctr Sight, New Delhi, India
[9] All India Inst Med Sci, Dr RP Ctr Ophthalm Sci, Strabismus, Paediat Ophthalmol & Neuroophthalmol Serv, New Delhi 110029, India